1. [NA]. The projecting shell-like structure on the side of the head, constituting, with the external acoustic meatus, the external ear. Syn: ala auris, auricula(1), pinna(1).
2. Syn: auricle of atrium.
accessory auricles
atrial auricle
cervical auricle
auricle of left atrium
auricle of right atrium